CVE-2023-38939
CWE-787Published: August 7, 2023· Updated: Jun 17, 2026
Official Description
Tenda F1202 V1.2.0.9 and FH1202 V1.2.0.9 were discovered to contain a stack overflow via the mit_ssid parameter in the formWrlsafeset function.
Risk Analysis
Tenda F1202 and FH1202 routers contain a stack-based buffer overflow vulnerability triggered by the mit_ssid parameter. This critical flaw allows remote attackers to gain control over the device without authentication.
There is no public exploit known, and it is not in the CISA KEV catalog. The vulnerability is remotely exploitable with low complexity.
Apply the latest firmware updates provided by Tenda. Disable remote management features if they are not required.
Technical Analysis
CVE-2023-38939 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-38939 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts